package com.matrix.java.chap_18.example;

public class Case18_03 {
    public static boolean isPalindrome(String s) {
        if (s.length() <= 1) {
            return true;
        } else if (s.charAt(0) != s.charAt(s.length() - 1)) {
            return false;
        } else {
            return isPalindrome(s.substring(1, s.length() - 1));
        }
    }

    public static void main(String[] args) {
        System.out.println("Is moon a palindrome? "
                + isPalindrome("moon"));
        System.out.println("Is noon a palindrome? "
                + isPalindrome("noon"));
        System.out.println("Is a a palindrome? "
                + isPalindrome("a"));
        System.out.println("Is aba a palindrome? "
                + isPalindrome("aba"));
        System.out.println("Is ab a palindrome? "
                + isPalindrome("ab"));
    }
}
